<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
         <img src="~assets/images/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
             class="title-item" :class="{active:index === currentIndex}"
             @click="titleClick(index)">
          {{item}}
        </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
    import NavBar from 'components/common/navbar/NavBar'

    export default {
        name: "DetailNavBar",
        components:{
          NavBar
        },
        data(){
          return {
            titles:['商品','参数','评论','推荐'],
            currentIndex:0
          }
        },
        methods:{
          titleClick(index){
            this.currentIndex = index;
            this.$emit('titleClick',index);
          },
          backClick(){
            this.$router.back()
          }
        }
    }
</script>

<style scoped>
  .title {
    display: flex;
    font-size: 13px;
  }
  .title-item{
    flex:1;
  }

  .active{
    color: var(--color-high-text)
  }

  .back img {
    margin-top: 12px;
  }
</style>
